A parachutist's rate during a freefall reaches 126 miles per hour. What is this rate in feet per second? At this rate, how many feet will the parachutist fall during 10 seconds of free-fall? In your computations, use the fact that 1 mile is equal to 5280 feet. Do not round your answers.

0.035

.35

Step-by-step explanation:

in one hour or in 3600 seconds the parachuterfalls 126 miles which means we have the following ratio

seconds:distance

3600:126

we want to find

1:x

To find x we divide 126 by 3600 (we do this because we divided 3600 by 3600 to get 1)

we get 0.035

This means that the parachuter falls at a rate of 0.035 ft/s

To find the distance fallen in 10 seconds we simply multiply 0.035 by 10

I do this and get .35

the answer   is 200

step-by-step explanation:

this is a problem about poisson probabilities.   i don't know if you've

already studied poisson distributions, or if you have a place to look

to read more about the subject.  

here's how you can see a poisson distribution coming.   when there are

a lot of events that may happen at any time (or any place), and when

you're counting how many of them happen at a particular time (or a

particular place), and each event is independent of the others, then

the result is a poisson distribution.   this is roughly true for the

chocolate chips; one chip being in a cookie has only a small effect on

the probability that another chip will be in the cookie.

once you know you have a poisson distribution, you know a lot.   there

is only one parameter to a poisson distribution, so if you know the

mean, you know everything.   the form of the distribution is

  probability of n chips = {[e^(-x)]*(x^n)} / (n! )